If the no of leaves in a tree is not a power of 2,then the tree is not a binary tree.

It is possible to construct a binary tree uniquely whose pre-order and post-order traversals are given.

In a circular linked list organization,insertion of a record involves modification of :

(a) How many binary relations are there on a set A with n elements?

(b) How many one - to - one functions are there from a set A with n elements onto itself